I have found an addon that does something I like but it functions throughout the game - in open-world and in instances.
It removes auras.
Is there anything I can add around or to the existing addon to make it NOT activate / fire / etc when in any kind of instance (dungeon, raid, pvp, etc)?
The addon author has added "This document may not be reproduced or transmitted in any form, in whole or in part, without the express written permission of" or I'd put an approximation of it here.